It is easy to pick holes in the platform
$30 per month for the additional ability to download code and APKs; and $70 per month to add custom APIs, GitHub integration, which updates a repository when code is modified, iOS deployment, and management of Firebase content.
It would be churlish to pick holes given that it already seems to have shot itself in the foot.
Apps are extremely expensive to build, the median cost is I believe $100,000.
If that were true (and "I believe" seems to be doing a lot of work in that sentence), the proportion of the $100k that involves work that can be substituted by dragging and dropping some components in a browser-based IDE will be relatively small. I believe.